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900407 Sigma-Aldrich

Graphene nanoplatelets

surface area 750 m2/g

Synonym: GNPs, xGnP® graphene nanoplatelets-grade C-750

  • CAS Number 7782-42-5

  • Empirical Formula (Hill Notation) C

  • Molecular Weight 12.01

  •  EC Number 231-955-3



Related Categories Carbon Nanomaterials, Graphene Powder and Dispersion, Graphene and Graphene Oxide, Materials Science, Nanomaterials More...
description   relative gravity: 2.0-2.25 g/cm3
form   powder
thickness   a few nm
particle size   <2 μm
surface area   750 m2/g
bulk density   0.2‑0.4 g/cm3


General description

xGnP® graphene nanoplatelets are unique nanoparticles consisting of short stacks of graphene sheets having a platelet shape.
The unique size and platelet morphology of xGnP® graphene nanoplatelets makes these particles especially effective at providing barrier properties, while their pure graphitic composition makes them excellent electrical and thermal conductors. xGnP® graphene nanoplatelets can improve mechanical properties such as stiffness, strength, and surface hardness of the matrix material.
xGnP® graphene nanoplatelets are compatible with almost all polymers, and can be an active ingredient in inks or coatings as well as an excellent additive to plastics of all types. The unique manufacturing processes are non-oxidizing, so material has a pristine graphitic surface of sp2 carbon molecules that makes it especially suitable for applications requiring high electrical or thermal conductivity.
Grade C particles typically consist of aggregates of sub-micron platelets that have a particle diameter of less than 2 microns and a typical particle thickness of a few nanometers, depending on the surface area. In general, grade C particles show very high surface area and macro-porosity. Grade C particles are available in different grades with average surface areas of 300, 500 and 750 m2/g.


• Ultracapacitor electrodes.
• Anode materials for lithium-ion batteries.
• Conductive additive for battery electrodes.
• Electrically conductive inks.
• Thermally conductive films and coatings.
• Additive for lightweight composites.
• Films or coatings for EMI shielding.
• Substrate for chemical and biochemical sensors.
• Barrier material for packaging.
• Additive for super-strong concrete.
• Additive for metal-matrix composites.


250 g in glass bottle

Other Notes

Graphene nanoplatelets have naturally occurring functional groups like ethers, carboxyls, or hydroxyls that can react with atmospheric humidity to form acids or other compounds. These functional groups are present on the edges of the particles and their wt% varies with particle size.

Surface area of 750 m2/g is an average surface area.

Legal Information

xGnP is a registered trademark of XG Sciences, Inc.

Safety & Documentation

Safety Information

NONH for all modes of transport


Certificate of Analysis

Protocols & Articles


Recent Advances in Scalable Synthesis and Processing of Two-Dimensional Materials

1Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA 2School of Materials Science and Engineering, Nankai University, Tianjin, 300350,...
Deep Jariwala,1* Jian Zhu,2 Jung-Woo Seo,3 and Mark C. Hersam3*
Material Matters, 2018, 13.1
Keywords: Absorption, Adsorption, Catalysis, Centrifugation, Chemical vapor deposition, Crystallization, Degradations, Deposition, Diffusion, Electronics, Filtration, Ligands, Materials Science, Microscopy, Nanomaterials, Nucleic acid annealing, Oxidations, Photoexcitation, Photovoltaics, Purification, Recombination, Scanning electron microscopy, Semiconductor, Separation, Solar cells, Solvents, Sonication, Sublimation

Related Content

Graphene and New Monoatomic Materials: Using 2-Dimensional Nanosheets in a 3-Dimensional World Webinar

Chemists have been able to manipulate graphene by enhancing its processibility and versatility. It is possible to tailor graphene, using covalent or supramolecular chemistry, into a variety of forms ...
Keywords: Catalysis, Crystallization, Electronics, Nanomaterials, Nanotechnology, Organic electronics, Polymerization reactions, Semiconductor

Probing Dirac Electron Physics in Graphitic Materials Webinar

Electrons in monolayer graphene are described by massless Dirac electrons, which exhibit unique quantum phenomena due to the pseudospin and Berry phase of the massless electron. In this talk, Dr. Fen...
Keywords: Electronics, Nanomaterials, Nanotubes

Peer-Reviewed Papers


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